This function returns the default Locale, which is used by PHP to localize
certain features. Please note that this isn't influenced by
setlocale() or the system settings.
<?php
// get the default Locale
echo i18n_loc_get_default();
//set a new Locale...
i18n_loc_set_default('pt_PT');
// ... and print it
echo i18n_loc_get_default();
?>